With the population of Fort Smith, Ark., expected to double to 300,000 over the next 40 years, utilities director Steve Parke had to find a way to provide the growing community with drinking water without affecting current supplies.

Also referred to as microbiologically induced corrosion, biogenic sulfide corrosion is a big concern to engineers and practitioners because it contributes to the considerable cost of renovation of deteriorated sewer networks.

Looking to extend the life span of its pumps, the Monroe County Water Authority (MCWA) looked for ways to get more out of the gear. Among the findings: anti-corrosion, low-friction coatings increase efficiency and slash energy costs.